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Old 10-15-2014   #11
Canon City, Colorado
Paddling Since: 2000
Join Date: Apr 2006
Posts: 427
I like DRE for many things. However, when I was in the market for a welded aluminum frame, I knew what I wanted and went to DRE and got a lot of push-back on features that I wanted. They told me that if they welded some of the joints that they wanted to use fittings on, the frame would bend and sag there. I also had trouble with welds on a large dry box that I ordered from them cracking repeatedly. They were always nice about fixing it, but it leads me to wonder how good the welding is there.

In the end I ponied up and drove to Flagstaff to get a frame from PRO, who builds exactly what I wanted, with no pushback. I think it was also cheaper than what DRE quoted me.

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Old 10-21-2014   #12
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Join Date: Jul 2005
Posts: 311
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This front bay is one continuous piece of 1 5/8" od 6061 aluminum tube, supposedly 6061 is not bendable, but i looks like it bent just fine to me. Probably could save you some bucks if you'd like to pitch in with some labor. I can bend, weld, notch any thing you design. Im in ft collins, not a professional just a boater.

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Old 11-27-2014   #13
NOCO, Colorado
Paddling Since: 68
Join Date: Feb 2014
Posts: 143
The strength of a welded joint on a round member is porportional to the radius to the third power or r^3.
A 1.5 ips welded joint yields .95"^3 or .875 in^3

A 1" ips welded joint yields .65"^3 or 0.276 in^3

The ratio of the values is 3.17. The inference is that a 1.5 pipe joint is 3.2 times stronger than a 1" pipe joint all other parameters being equivalent.

The cost of the welders time however is about the same for each of the joints.

From a efficiency perspective, the larger pipe is better. However, If you have to carry the frame a mile to the river, the price is justifyable.

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